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2 years ago

Expand and simplify (2x+5y) (x-3y)

1 answer:

3 0

Should be simple:

Let's take this one at a time.

2x(x-3y)

You'd get:
$2x^2-3xy$
for the first one.

2nd one:
5y(x-3y)
you'd get:
$+5xy-3y^2$

Put them both together:
$2x^2-3xy+5xy-3y^2$

Combine like terms.

Your Answer:
$2x^2+2xy-3y^2$

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Write a formula for fogoh, where f(x) = x + 1, g(x) = - 3x, and h(x) = 5 - X. (fogoh)(x) =

Marina86 [1]

Step-by-step explanation:

f(x) = x + 1

g(x) = -3x

h(x) = 5-x

find fogoh

first we find fog

f(g(x)) = -3x + 1

then we find fogoh = -3(5-x ) +1

= -15 + 3x +1

= 3x -14

3 0

2 years ago

What is the value of g(−3) when g(x)=2x−2 ?

nikdorinn [45]

For these types of problems, plug the value inside the ( ) into the (x) of the equation.
g (-3), g (x) = 2x-2
g (x) = 2 (-3) - 2 = -6 - 2 = -8
g (-3) = -8

3 0

2 years ago

Read 2 more answers

Please help me if you can. Sorry if it’s blurry

jarptica [38.1K]

Step-by-step explanation:

oh, come on, just multiplication.

7.5×10⁴ years is 7.5×10000 =75000 years.

0.005 inches per year for 75000 years means

0.005 × 75000 = 5 × 75 = 375 inches.

7 0

2 years ago

If the radius of the circle is multiplied by a factor of 3, then the area of the circle is multiplied by a factor of

Oksi-84 [34.3K]

$\bf \textit{area of a circle}\\\\
A=\pi r^2\quad 
\begin{cases}
r=radius\\
-----\\
r=\stackrel{r\times 3}{3r}
\end{cases}\implies A=\pi (3r)^2
\\\\\\
A=\pi (3^2r^2)\implies A=9(\pi r^2)$

notice, if the original area was πr², then the new area has a factor in front of it, that much.

8 0

2 years ago

Write the equation in standard form of the line that has x-intercept 6 and y-intercept -2.

zysi [14]

Answer:

x - 3y = 6

Step-by-step explanation:

Equation of the line in intercept form

The intercept form of the equation of a line is:

$\displaystyle \frac{x}{a}+\frac{y}{b}=1$

Where:

a = x-intercept

b = y-intercept

The standard form of a line is:

Ax + By = C

The given line has a=6 and b=-2, thus:

$\displaystyle \frac{x}{6}+\frac{y}{-2}=1$

Multiplying by 6:

x - 3y = 6

This is the required standard form of the line.

Thus, the standard form of the line is:

x - 3y = 6

8 0

2 years ago